Growing a Dwarf Burning Bush?

I have a small courtyard that gets tons of sun. I'm planning on planting a dwarf burning bush that I plan to diligently maintain in small tree form (5-6' H 4-5' W). Is there a chance the root system could damage an adjacent concrete patio as the bush gets older? Even if I maintain the size, is there any chance it can outgrow the space? Thanks!